How To Make Your Own Silicone Soap Mold Liners Tutorial

8/7/2019 How To Make Your Own Silicone Soap Mold Liners Tutorial

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How To Make Your Own Silicone Soap Mold Liners Tutorial:

DIY Silicone Liners for Soap Molds By Kaseen Cook, Tortuga Soaps

You can make your own silicone liners for your soap moulds, all you need is some RTV silicone (easily sourced from theinternet or locally) and some simple supplies you can usually find around the house. Silicone is not a cheap material, so makingyour own can save you labor cost , as well as make soaping easier and more fun without having to line your moulds all thetime! You can also pour your liners onto cool textures to make all sorts of uniquely textured soaps. Try pouring on engraved plaster to create a liner custom made with your logo. It takes a bit of patience, but is certainly not too hard for anyone toaccomplish in a weekend.

Silicone is the only material that will adhere to silicone. It does not “glue” the pieces together, it chemically welds them, whichmeans that when joining two pieces of silicone with silicone they become chemically and physically the same object. This is likemetal welding, only with silicone, so the finished product is just as strong as one that was made with one pour. There isn’tmuch difference to the end user having a liner made in one pour vs. one welded from pieces, although they take longer to make,

but as long as the pieced one is put together with care and attention to detail, they are just as good. Welded silicone liners arestrong and practical for those wanting to make liners and save some money.

**For even cheaper liners, you could try Polyurethane Rubber. Polyurethane is not ”self-releasing“ like silicone, so will requiremould release agents like food grade silicone and wax, but savings of up to 50% off the cost of silicone can be realized. The pros for this material are it’s much cheaper than silicone, firm but flexible material, and very durable and much longer lastingthan silicone. The cons are that when molding soap the mould will need a release agent like food grade silicone or wax, so it’s a bit more work than silicone.

Preparation:

To Make Your Own Silicone Soap Mold Liners Tutorial http://www.smftutorials.com/how-to-make-your-own-s

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Planning the layout and height of your liner, and then arrange into one or two flat areas as in the diagram. Remember, silicone isexpensive, measure twice and pour/cut once!

Determining the amount of silicone for your mould I would suggest a liner thickness of 3mm for the most cost effective use of your silicone as well as not taking up too much space in your mould, while retaining adequate strength. After you havedetermined the surface area you will need to cover with silicone (the internal surface area), ensure the measurements are in cm,and determine the total surface area in cm squared. If you want a 0.3cm thick mould (3mm), multiply the surface area by thethickness of the liner to get the volume of silicone in cm cubed, or cc’s, or ml’s. This volume is equivalent to the material in

weight (as 1cc/ml of silicone is approximately 1g of silicone), so for measurement purposes convert the volume to weight.

Here is an example to illustrate:

Liner surface area (as contained in the frame) is 39x32cm = 1,248cm2

1,248cm2 x 0.3cm(thick) = 374.4ml (or cc’s) = 375g silicone.

With the average cost of silicone at $0.05/g = $18.75

As you can see increasing the thickness will greatly increase the price of the liner:

1,248cm2 x 0.5cm(thick) = 624ml (or cc’s) = 624g silicone. = $31.20

1,248cm2 x 1cm(thick) = 1,248ml (or cc’s) = 1,248g silicone. = $62.40

Materials:

Long wooden battens or strips of cardboard or any other straight objects to make frames.

Stirring stick/spatula, plastic tub, and gloves.RTV Silicone (I would suggest starting with about 1kg for cost effectiveness and for just enough volume without hugeinvestment. If you plan to make many liners or if you have large liners, 5kg packages are the most economical and costeffective of the smaller packages, ranging from $200 to $250AUD)

Desirable properties (guide only):


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Low to medium viscosity (45,000 cps or less) for smooth pouring, medium cure time (min about 6 hours to full cure and30min pot life to allow working time, real cure time is usually half of advertised cure time), and Shore A hardness of 25 or greater – the firmer the silicone (Shore A of 35-50) the thinner the liner can be while retaining the same strength and support (aslong as the other qualities are still present).

Australian Resources and Suggestions:

Webmasters Note: there are many similar products available in different countries, I currently reside in the USA and upon searching for similar products available both online and in my local area via Google, I did not find it hard to locate these

products. If you need help please visit our forum and pose any question you may wish to ask]

Online:

Adelaide Molding and Casting (http://www.amcsupplies.com.au)

Suggestions:

(made by Barnes Silicone) Maximould, M4503, Ultrasil. Barnes Silicone (http://www.barnes.com.au/)

Suggestions:

Use caution if you choose to use Pinky Silicone, as this silicone must be molded in about 6minutes, which may not be enoughtime to pour/spread your liner, otherwise it’s the best silicone so may be worth a try! Tufsil 25, Maximould, M4503, Ultrasil.


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Solid Solutions

(http://www.solidsolutions.com.au) Suggestions (Tin Catalyzed): Solid Mould 500, Polytek TinSil 70-30.

Local:

Check your local Fiberglass and Mould Making Supplies Store; many carry RTV silicone and the Barnes range of products(their website lists stores that supply their silicone). Just look up “fiberglass” or “molding and casting” in the yellow pages.

Steps:

Layout the batons into the surface area rectangles required for your size liner, to contain/mould the silicone. Be sure touse a right angle tool or the corner of a sheet of paper to square your frame.

Tape around the edges of your walls to prevent any silicone leaking out.

Ensure the surface you are pouring onto is clean. You can pour onto any surface, including cool textures (bubble wrap,sandpaper, needle point grid, ect.. beware of fabrics or carpet, silicone can soak in and be hard to get out!).

Tips:

You can use the side of the silicone that is touching the surface as the inner or outer part of your liner depending onwhich you prefer. Sometimes it is better to pour your liner onto a slightly textured surface like paper or MDF and usethe side that contacts the MDF or paper as the outer side of your liner, because it will not grip onto your outer woodenmould when inserting.

Mix your silicone as per the manufactures guidelines (search for pouring silicone and the “bombs away” method on theinternet for some really good videos. Tap Plastics makes great instructional videos). Pour into your frame using the

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“bombs away” method to reduce air bubbles. The bombs away method is essentially pouring a very thin stream from aheight to stretch and pop any bubbles that were trapped in the silicone during mixing. Using a plastic spatula spread thesilicone into the corners and even-out thin or thick areas.

Blow across the silicone with a hair drier set to cool and with an air funnel/straightening attachment to make aconcentrated blast, or just blow across the top of the silicone with your mouth, to pop any remaining bubbles (just becareful not to accidentally spit on it or hyperventilate lol).

Cover your frame with a board or other stiff cover if you are worried about lint or pets/kids getting into it while it

hardens. Allow curing for the recommended time, heat generally speeds up the cure (as the reaction is endothermic), so a blast with a hair drier, heater or keeping it in a warn room will quicken the process. Do not use a heat gun or flame onthe silicone as this is TOO hot. To clean up your mix pot and spoon, just let the silicone cure and peal off, it’s really easyto clean! Or you can put the silicone pot with the extra silicone on the sides in the freezer to prevent it from curing for about 1-2 days, and use it later to join/weld your liner sides.

When dry, peal off the frame and surface. Trim/slice the silicone sides to fit into your mould.


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Tips:

It is less messy, easier, and fills gaps better, putting the silicone on the thin edges of your sides and putting in place,rather than smearing onto the receiving surface.

Enjoy Your Liners!

(Please do not reproduce, distribute or sell without permission – information is given in good will and we are not responsible for damages or losses resulting from the use of our instructions and tips)

Author: Kaseen Cook , Owner of Tortuga Soaps, Please check out her website and show her your support!

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How To Make Your Own Silicone Soap Mold Liners Tutorial

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